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. 2022 Jan 28;2(1):20210029. doi: 10.1002/EXP.20210029

TABLE 1.

Electrospun fiber‐based materials for flexible bioelectronics and tissue engineering

Entry Composition Fiber structure Properties and functions Applications Ref.
Flexible bioelectronics

Core: PVDF‐BTO

Shell: PVDF‐GO

Core‐shell Piezoelectricity, conductivity, sensitivity of 10.89 ± 0.5 mV kPa–1 Human motion monitoring and tactile imaging [7]
PVA/Polyurethane/Au Solid, random Ultrathin nanomesh without sensory interference Finger force monitoring [29]
PU Solid, random Flexibility, no interference Pulsing cardiomyocytes monitoring [30]

Outer shell: PVA

Inner shell: DA

Core: PVDF

Core‐shell, aligned Humid sensitivity and selectivity Mental sweating monitoring [31]
PVDF/BTO NPs‐embedded, random Lightweight, sensitivity of 3.95 V N−1 Physiological monitoring [32]

Core: PVDF

Shell: hydroxylamine hydrochloride

Core/shell, random Self‐orientated nanocrystals, enhance β‐phase of PVDF Detection of cardiovascular micropressure [33]

Core: PVDF

Shell: DA

Core/shell, random Enhance β‐phase of PVDF, soft, piezoelectricity Detection of diaphragm motions and blood pulsation [34]
Silver‐doped PVDF Aligned Flexibility, enhanced piezoelectricity than random one Respiratory monitoring [35]
PVDF‐TrFE, PU, PVDF‐HFP Random Triboelectric, piezoresistive, thermoresistive sensing Human motion and breathing sensors [36]
P(VDF‐TrFE)/BTO NPs‐anchored, random Self‐powered, 84 V, 1.32 μA Implantable vagal neuromodulation stimulator [38]
PVDF‐TrFE Aligned Piezoelectricity, electromechanical stimulation, ion channel modulation Piezo‐bioelectronics [39]
PCL/gelatin Random Biomimicking of heart matrix, porous, penetrative Cell electrical activity recording and therapeutic control [40]
BTO crystals Solid, random Flexibility, fast response time of 80 ms Piezoelectric sensors [76]
Silica fiber fragment High robustness, transparent, conductivity of 3.93 S m–1 Pulse and handwriting detecting [77a]
Carbon nanotube (CNTs) Yarn Flexibility, 3D‐printed, temperature sensitivity of 1.95%°C−1 Wearable temperature sensor [83a]
Tissue engineering

Inner layer: HAp‐loaded gelatin

Outer layer: antibacterial agent‐loaded PCL

Random inner and aligned outer layer Enhanced osteogenic and antibacterial effects, macrophages polarization Bone regeneration [41]
MSN‐based PCL/gelatin Particle‐embedded, random Dual‐delivery for increased bone formation and inhibited bone resorption Bone regeneration [47a]
PCL/HAp Honeycomb‐like Differentiated bone cells without chemical factor Maxillofacial repair in bone regeneration [49]
MgO‐loaded PLA/gelatin NPs‐embedded. random Biodegradable, elevated mechanical, antibacterial, and osteogenic properties Periodontal tissue regeneration [64]
Gelatin/PLGA 3D‐printing scaffolds, latticed Chondrocytes‐laden, good elasticity, and water‐induced shape memory Cartilage regeneration [83b]
PCL/poly(3‐hydroxybutyrate) (PHB)/PANi Bioactive molecular‐laden Enhanced piezoelectricity, prolonged drug release, enhanced osteogenesis, and mineralization Bone tissue engineering [85]
PVDF/FeOOH Nanorod on fiber Ultrasonic‐driven piezoelectricity and ion release, neural differentiation Neural tissue engineering [19]
SMPs Aligned, 4‐channel tubular conduit Bioinspired, degradable, cell‐laden Peripheral nerve regeneration [27a]
Gelatin methacrylate (GelMA) Aligned conduit Inducing neural differentiation, inhibiting the glial scar formation Spinal cord regeneration [78]
PCL Aligned Functionalized with gradient concentration of NGF, similar performance with autograft Sciatic nerve regeneration [86]
PCL/silk fibroin/CNTs Interwoven aligned Promoted cell maturation and endothelialization Artificial 3D cardiac anisotropy for cardiac tissue regeneration [26a]
PLGA, PVDF, cellulose Aligned and helix yarn Highly stretchable, promoted myogenic differentiation Various tissue engineering [26b]
CNTs sheets Superaligned Efficient electrotonic propagation, reduced signal dispersion Myocardial resynchronization in cardiac tissues [54]
GelMA Random Tissue‐adhesive patch, optimized mechanical and conductive properties, restore electromechanical coupling Cardiac tissue regeneration [77b]
PU Aligned array onto a latticed gauze fiber Self‐pumping the biofluid, faster re‐epithelialization, and collagen formation Wound healing for skin regeneration [44]
PCL/F‐127 3D scaffold with radially or vertically aligned nanofibers Enhanced re‐epithelialization or granulation tissue formation in the diabetic wound Diabetic wound healing [58]
PLGA/fish collagen Random, aligned and latticed Better healing effect and immunomodulatory properties for the aligned one Wound healing for skin regeneration [81]
PLGA/PCL Rolling up into tubular scaffolds Three cell lineages‐laden to form a biomimetic vessel, controllable shape during biodegradation Vascular tissue engineering [45]
PCL

Double layered tube

Inner: random

Outer: orientated

3 mm diameter, endothelial progenitor cells and differentiation of MSCs into smooth muscle cells Vascular tissue engineering [72]
PCL/GelMA Self‐rolled from 2D surface into 3D tubular shape at 37°C Desirable endothelial cell attachment, deformation properties 3D endothelialization [79b]